Hygienic Double Seal Valves DD

RIEGER Double Seal Valves DD are used for the mix-proof barrier of product and cleaning medium in pipe sections. The leakage chamber is placed between the separating seals. The leakage is discharged via the leakage valves to the outside. 
The design of the one-piece, solid and cavity-free valve housing provides optimal CIP/SIP cleaning options. The valves are used in systems of the brewery and beverage industry, in dairies and in the food industry and pharmaceutical industry.

Materialin contact with product
optional
not in contact with product
1.4404/AISI316L
1.4435/AISI316L
1.4301/AISI304
   
Gaskets

O-rings/gaskets
 
EPDM
(others on request)
   
Temperatures
maximum
 EPDM
 continuous operation

steam sterilization
 130 °C*

150 °C*
   
Pressures

closing pressure

air pressure
 
max. 6 bar
 
min 6 bar -
max. 10 bar
   
Surfaces

in contact with product
optional


not in contact with product
Ra ≤ 0,8 µm
e-polished,
other surfaces
on request
Ra ≤ 1,6 µm
   
Connections
Standard-
pipe classes
DIN 11850-R2 (DIN 11866 A)
O.D.-Tube (DIN 11866 C)
 
                                                                                 *dependent upon operating conditions
Double Seal Right Angle Type L
Double Seal Double Right Angle Type T
Double Seal Cross Type TT
Construction of the valve

one-piece solid valve body

no dead space

safe CIP/SIP cleaning


Absolute product safety

radial sealing of valve disks

safe separation of products

leakage is safely drained off


Serviceability

change of seals without special tools

valve insert completely

removable upwards


Efficiency

sandard O-rings

few seals

low spare part costs


Recommended Bürkert control tops for aseptic valves with 24 V DC or ASI bus
Contactless position with three switching points (teach-in function) with 3 internal feedback sensors, 1 output for external feedback (external feedback not included).


Two alternatives:

24 V DC with 4 digital outputs screw terminals, cable gland:


AS-Interface with a maximum of 62 slaves flat cable clamp with 1 m cable


Remarks:

  • 0 solenoid valve e.g. for single seat valves - pure feedback function
  • 1 solenoid valve for e.g. for single seat valves with actuators NC or NO
  • 2 solenoid valves for e.g. for single seat valves with air/air actuator or double seat valves N5, N9


For more details see website Bürkert www.buerkert.com

All Valves are available in special alloys, such as Hastelloy C22, 1.4539/904L, 1.4529, AL6XN and others.

Directly send us your inquiry:
sales@rr-rieger.de
Tel.: +49 7361 5702-0
LET US ADVICE YOU